William lawson dash



(N9 Model.)

W. L. DASH. INSTRUMENT-FOR PREVENTING DEPOSIT ON INTERIORS 0F KETTLES, &c

No. 602,832. Patented Apr. 26,1898.

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UNITED STATES PATENT Erica.

NILLIAM LAWSON DASH, OF LONDQN, ENGLAND.

INSTRUMENT FOR PREVENTING DEPOSIT ON INTERIORS 0F KETTLES, &c.

SPECIFIGATION forming part of Letters Patent No. 602,832, dated. April 26, 1898. Application filed December 24, 1897. Serial No. 663,357. (No model.) Patented in England April 23, 1896, No. 8,602.

To all whom it may concern.-

Be it known that LWILLIAMLAwsoN DASH, a subject of the Queen of Great Britain, residing at 37 Durley road, Stamford Hill, London, in the county of Middlesex, England, have invented a New Article or Instrument for Preventing Deposit on the Interiors of Kettles and other Vessels in which Water is Boiled, (for which I have received Letters Patent in Great Britain, No. 8,602, dated April 23, 1896,) of which the following is a specification.

To prevent the formation of deposit upon the interior surfaces of kettles and vessels in which water is boiled, I employ an article or instrument which I make from a waste material-via, the core or interior of the loofah, which is a common article of commerce, being the dried fibrous part of the fruit of the Leaflet aeg'yptiaca. I take these cores and cut theininto short lengths, say two inches, more or less, according to the size of the article whichI desire to produce. Then, say, a dozen of these lengths I thread upon a wire or string and so connect them together, each being so held by one end. The wire or string is joined to form a central ring outward from which the strips of loofah core radiate. The strips are packed close together and so that a disk is formed. A center or hub,of metal or other magerial, may be provided at the center of the isk.

'When the article or instrument is placed in a kettle and the water therein is boiled, the earthy material thrown out of solution collects in the opennetwork of fiber constituting the loofah core in place of being deposited as scale on the interior of the kettle or vessel.

Having thus stated the nature of my invention, I will now describe more in detail the manner in which I prefer to carry the same into practice.

Figure l is a face view of one of the pieces. Fig. 2 is a face view, and Fig. 3 an edge view showing the first step in joining the pieces to gether. Figs. 4 and 5 are similar views after the second step, and Figs 6 and 7 are similar views of the completed article.

I remove from the loofah the outer fine network of fibers, which is the valuable part, to be reserved for other uses, and I take the core, which is of a much coarser texture, and reduce it to a thin sheet by passing it between metal rollers and so exposing it to a heavy pressure. The loofah core being in a dry state has but little resilience, and after this treatment retains the form of a thin sheet not exceeding oneeighth of an inch in thickness. I out pieces a from the sheets to form such as is shown by Fig. 1 of the annexed drawin gs. I assemble ten or'a dozen of such pieces upon a string and tie them together by astring 1) in the manner indicated by Figs. 2 and 3, and to keep the pieces in due order I apply two buttons 0, which may suitably be of vegetable ivory, or porcelain, or bone. These buttons occupy the center of the group of pieces, one at the top and the other beneath. The two buttons are connected by a string 01, which is knotted together, the knot being concealed between the pieces. The article in this stage of its manufacture is shown by Figs. 4 and 5. Finally it is soaked in hot water, when the pieces of loofah core resume their resilience and the article assumes the form shown by Figs. 6 and '7. The radial pieces of loofah core swell so that no interval is apparent betweenlthem, and they then appear like a fibrous disk in one piece. The buttons may, if desired, be applied after the article has been soaked. Scum floating on the surface of hot liquids may be removed by means of these articles by dipping them into the pot, when the scum will be found to adhere to the article and may be removed with it.

What I claim is- 1. The new article or instrumentherein described for preventing deposit in kettles and the like consisting of loofah strips connected together at one end by a wire or string whose ends are joined to form a ring with the loofah strips projecting radially from it.

2. The new article or instrument herein described for preventing deposit in kettles and the like consisting of loofah strips connected together at one end bya wire or string whose ends arejoined to form a ring with the loofah strips projecting radially from it and held in place by buttons.

W'ILLIAM LAWSON DASH.

Witnesses:

EDMUND S. SNEWIN, PERCY E. Mnrrooks. 

